Waterproof! M400 🔊BRAND NEW Dual mode Built-in Microphone, Classic Design, Durable Materials 3.5mm Audio Cable Included Sbode M400 Speakers deliver excellent audio quality and give you a perfect sound experience.Multi-function Bluetooth speakers with Built in Mic, TF Card, FM radio and Sync features.Feel stereo sound all around you.It has long playtime takes you on an unforgettable journey. Built to withstand your next adventure. * Superior Bass Sound * True Wireless Stereo * Lightweight Design * Bluetooth 4.2 * Waterproof * FM Radio * Built-In Mic